function maintenance_alert_404()
{
if (!is_404()) {
return;
}
$email = get_option('mainwp_maintenance_opt_alert_404_email');
if (empty($email) || !preg_match('/^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\\.[a-zA-Z0-9-.]+$/is', $email)) {
return;
}
// set status
header('HTTP/1.1 404 Not Found');
header('Status: 404 Not Found');
// site info
$blog = get_bloginfo('name');
$site = get_bloginfo('url') . '/';
$from_email = get_bloginfo('admin_email');
// referrer
if (isset($_SERVER['HTTP_REFERER'])) {
$referer = MainWP_Helper::clean($_SERVER['HTTP_REFERER']);
} else {
$referer = 'undefined';
}
$protocol = isset($_SERVER['HTTPS']) && strcasecmp($_SERVER['HTTPS'], 'off') ? 'https://' : 'http://';
// request URI
if (isset($_SERVER['REQUEST_URI']) && isset($_SERVER['HTTP_HOST'])) {
$request = MainWP_Helper::clean($protocol . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
} else {
$request = 'undefined';
}
// query string
if (isset($_SERVER['QUERY_STRING'])) {
$string = MainWP_Helper::clean($_SERVER['QUERY_STRING']);
} else {
$string = 'undefined';
}
// IP address
if (isset($_SERVER['REMOTE_ADDR'])) {
$address = MainWP_Helper::clean($_SERVER['REMOTE_ADDR']);
} else {
$address = 'undefined';
}
// user agent
if (isset($_SERVER['HTTP_USER_AGENT'])) {
$agent = MainWP_Helper::clean($_SERVER['HTTP_USER_AGENT']);
} else {
$agent = 'undefined';
}
// identity
if (isset($_SERVER['REMOTE_IDENT'])) {
$remote = MainWP_Helper::clean($_SERVER['REMOTE_IDENT']);
} else {
$remote = 'undefined';
}
// log time
$time = MainWP_Helper::clean(date('F jS Y, h:ia', time()));
$mail = '<div>' . 'TIME: ' . $time . '</div>' . '<div>' . '*404: ' . $request . '</div>' . '<div>' . 'SITE: ' . $site . '</div>' . '<div>' . 'REFERRER: ' . $referer . '</div>' . '<div>' . 'QUERY STRING: ' . $string . '</div>' . '<div>' . 'REMOTE ADDRESS: ' . $address . '</div>' . '<div>' . 'REMOTE IDENTITY: ' . $remote . '</div>' . '<div>' . 'USER AGENT: ' . $agent . '</div>';
$mail = '<div>404 alert</div>
<div></div>' . $mail;
wp_mail($email, 'MainWP - 404 Alert: ' . $blog, MainWP_Helper::formatEmail($email, $mail), array('From: "' . $from_email . '" <' . $from_email . '>', 'content-type: text/html'));
}
